Ergonomic sweeping device

CROSS REFERENCE TO RELATED APPLICATIONS

This Application is a Continuation application of application Ser. No. 13/826,508 filed Mar. 14, 2013, now U.S. Pat. No. 8,973,200, which claims the benefit of priority under 35 U.S.C. §119(e) from earlier filed U.S. Provisional Application Ser. No. 61/622,540, filed Apr. 11, 2012, the entirety of which is incorporated herein by reference.

BACKGROUND

Technical Field

The present device is related to the field of custodial tools, particularly ergonomic sweeping devices.

When sweeping a floor, one usually has to sweep the debris into a pile and then bring a dustpan or other receptacle to remove it. Although this method is sufficient for small areas, it is inconvenient and inefficient for larger areas, such as warehouses, parking lots, and amusement parks. One way to increase sweeping efficiency in these situations is to hold a broom in one hand, while holding a dustpan in the other.

However, sweeping one-handed for an extended period of time can cause fatigue and strain in the upper extremities, particularly the hand and forearm. Further, excessive bending or spinal torsion can strain the shoulders and back. This can lead to reduced work performance, as well as potential injury.

What is needed is an ergonomically designed sweeping device that encourages proper biomechanics while sweeping in an efficient one-handed fashion.

SUMMARY

The present device provides ergonomic, one-handed operation of a sweeping device, allowing a user to more efficiently sweep a floor or other area with less muscle fatigue and strain.

BRIEF DESCRIPTION OF THE DRAWINGS

Further details of the present invention are explained with the help of the attached drawings in which:

<figref idref="DRAWINGS">FIG. 1</figref> depicts a perspective view of one embodiment of the present device.

<figref idref="DRAWINGS">FIG. 1<i>a </i></figref>depicts a front planar view of the embodiment shown in <figref idref="DRAWINGS">FIG. 1</figref>.

<figref idref="DRAWINGS">FIG. 1<i>b </i></figref>depicts a side view of the embodiment shown in <figref idref="DRAWINGS">FIG. 1</figref>.

<figref idref="DRAWINGS">FIG. 2<i>a </i></figref>depicts a perspective view of an alternative embodiment of a forearm support member in the present device.

<figref idref="DRAWINGS">FIG. 2<i>b </i></figref>depicts a perspective view of an alternative embodiment of a forearm support member in the present device.

<figref idref="DRAWINGS">FIG. 2<i>c </i></figref>depicts a perspective view of an alternative embodiment of a forearm support member in the present device.

<figref idref="DRAWINGS">FIG. 3<i>a </i></figref>depicts a perspective view of an alternative embodiment of a forearm support member in the present device.

<figref idref="DRAWINGS">FIG. 3<i>b </i></figref>depicts a perspective view of an alternative embodiment of a forearm support member in the present device.

<figref idref="DRAWINGS">FIG. 4</figref> depicts a perspective view of another embodiment of the present device having an adjustment mechanism positioned between a handle and a forearm support.

<figref idref="DRAWINGS">FIG. 5</figref> depicts a perspective view of another retrofitting kit embodiment of the present device.

DETAILED DESCRIPTION

As shown in <figref idref="DRAWINGS">FIG. 1</figref>, an elongated member <b>102</b> can have a proximal end and a distal end. As shown in <figref idref="DRAWINGS">FIG. 1</figref>, an elongated member <b>102</b> can be tubular with a substantially circular cross-sectional geometry, but in other embodiments can be partially or substantially completely solid along its length and can have any other known and/or convenient cross-sectional geometry. An elongated member <b>102</b> can be made from polymer, metal, or any other known and/or convenient material. In some embodiments, the material comprising an elongated member <b>102</b> can be selected to minimize the weight of the device.

In some embodiments, the distal end of an elongated member <b>102</b> can be connected to a bristle assembly <b>104</b> via a pivoting connector <b>106</b>. In such embodiments, a bristle assembly <b>104</b> can rotate laterally up to 90-degrees in each direction with respect to the distal end of an elongated member <b>102</b>. In such embodiments, the rotational motion of a pivoting connector <b>106</b> can be controlled via friction fit, a locking pin or nut, or any other known and/or convenient device. However, in other embodiments, a bristle assembly <b>104</b> can be removably connected substantially perpendicularly to the distal end of an elongated member <b>102</b>. In some embodiments, a bristle assembly <b>104</b> can be interchangeable. A bristle assembly <b>104</b> can be comprised of bristles made of polymer, natural fibers, or any other known and/or convenient material, affixed to a base made of polymer, metal, wood, or any other known and/or convenient material.

In the embodiment shown in <figref idref="DRAWINGS">FIG. 1</figref>, an elongated member <b>102</b> can have an adjustable length via a distal adjustment mechanism <b>108</b>. In such embodiments, a distal adjustment mechanism <b>108</b> can also allow for up to 180-degree rotation of the longitudinal axis of a bristle assembly <b>104</b> and adjacent elongated member <b>102</b>. In some embodiments, a distal adjustment mechanism <b>108</b> can be a spring-loaded locking-button device, but in other embodiments can be a locking pin or nut, threaded connection, friction fit or any other known and/or convenient device. In other embodiments, an elongated member <b>102</b> can have a fixed length.

As shown in <figref idref="DRAWINGS">FIG. 1</figref>, an elongated member <b>102</b> can have an offset region <b>110</b> located substantially at the midpoint of an elongated member <b>102</b>. In such embodiments, an elongated member <b>102</b> can be divided into a distal portion and a proximal portion substantially at the point of an offset region <b>110</b>. In the embodiment shown in <figref idref="DRAWINGS">FIG. 1</figref>, an offset region <b>110</b> can be located superior to an adjustment mechanism <b>108</b>, but in other embodiments can be located inferior to an adjustment mechanism <b>108</b>.

In some embodiments, an offset region <b>110</b> can be comprised of two opposite angular bends of approximately 45-degrees relative to the central axis of an elongated member <b>102</b>, such that the central axis of the proximal portion of an elongated member <b>102</b> can be shifted posterior to the central axis of the distal portion of an elongated member <b>102</b>. However, in other embodiments, the bends can be any other known and/or convenient angular measurement.

As shown in <figref idref="DRAWINGS">FIG. 1</figref>, a handle <b>112</b> can be connected superior to an offset region <b>110</b> at a point between approximately the midpoint of the proximal portion of an elongated member <b>102</b> and an offset region <b>110</b>. In some embodiments, a handle <b>112</b> can be connected to an elongated member <b>102</b> such that the grip portion of a handle <b>112</b> can be substantially parallel to the longitudinal axis of a bristle assembly <b>104</b>. In some embodiments, a handle <b>112</b> can be removably connected to an elongated member <b>102</b> via rivets, pins, adhesive, or any other known and/or convenient device. In other embodiments, a handle <b>112</b> can be integrated with or affixed to an elongated member <b>102</b> via a welded joint, molding, or any other known and/or convenient process.

In some embodiments, a handle <b>112</b> can further comprise a padded grip member <b>114</b>. In such embodiments, a padded grip member <b>114</b> can have texturing to increase friction with a user's hand to improve grip. A padded grip member <b>114</b> can be comprised of foam, neoprene, textile, or any other known and/or convenient material.

As shown in the embodiment in <figref idref="DRAWINGS">FIG. 1</figref>, a forearm support member <b>116</b> can be located superior to a handle <b>112</b> at a point substantially proximal to the proximal end of an elongated member <b>102</b>. A forearm support member <b>116</b> can be in substantially linear alignment with a handle <b>112</b> along an axis substantially parallel to the central longitudinal axis of the proximal portion of an elongated member <b>102</b>. However, in other embodiments, a forearm support member <b>116</b> can be located in any other known and/or convenient location on the proximal portion of an elongated member <b>102</b>.

In some embodiments, a forearm support member <b>116</b> can be removably connected to an elongated member <b>102</b> via rivets, pins, adhesive, or any other known and/or convenient device. In other embodiments, a forearm support member <b>116</b> can be integrated with or affixed to an elongated member <b>102</b> via a welded joint, molding, or any other known and/or convenient process.

In the embodiment shown in <figref idref="DRAWINGS">FIG. 1</figref>, a forearm support member <b>116</b> can have a substantially closed-loop configuration. As shown in <figref idref="DRAWINGS">FIG. 1</figref>, a forearm support member <b>116</b> can have a substantially circular geometry, but in other embodiments can have an ovoid, quadrilateral, polygonal, or any other known and/or convenient geometrical configuration.

In some embodiments, a forearm support member <b>116</b> can further comprise a padded member <b>118</b>. As shown in <figref idref="DRAWINGS">FIG. 1</figref>, a padded member <b>118</b> can cover a portion of the circumference of a forearm support member <b>116</b> substantially adjacent to an elongated member <b>102</b>. However, in other embodiments, a padded member <b>118</b> can cover substantially the entire surface of a forearm support member, the circumferential interior region, or any other known and/or convenient portion of the surface of a forearm support member <b>116</b>. In some embodiments, a padded member <b>118</b> can have texturing to increase friction with a user's arm. A padded member <b>118</b> can be comprised of foam, neoprene, textile, or any other known and/or convenient material.

As shown in <figref idref="DRAWINGS">FIG. 2<i>a</i></figref>, a forearm support member <b>116</b> can be removably connected to the proximal end of an elongated member <b>102</b> via a pivoting connector <b>202</b> having an axis of rotation substantially parallel to the longitudinal axis of a bristle assembly <b>104</b>. A pivoting connector <b>202</b> can have a range of motion of approximately 0-90 degrees. In such embodiments, a forearm support member <b>116</b> can be rotated from the deployed position (substantially perpendicular to the longitudinal axis of the proximal portion of an elongated member <b>102</b>) to be substantially aligned with the longitudinal axis of the proximal portion of an elongated member <b>102</b> in order to also be used as a hanging device.

As shown in <figref idref="DRAWINGS">FIG. 2<i>b</i></figref>, a forearm support member <b>116</b> can have an open-loop configuration, having an opening of sufficient dimensions to allow a forearm to laterally enter the interior portion of a forearm support member <b>116</b>.

As shown in <figref idref="DRAWINGS">FIG. 2<i>c</i></figref>, a forearm support member <b>116</b> can have an arc configuration of sufficient curvature and dimensions to comfortably rest against a forearm, or any other known and/or convenient geometry. In such embodiments, a padded member <b>118</b> can substantially cover the interior surface of a forearm support member <b>116</b>. However, in other embodiments a padded member <b>118</b> can cover any known and/or convenient portion of the interior surface of a forearm support member <b>116</b>.

As shown in <figref idref="DRAWINGS">FIG. 3<i>a</i></figref>, a handle <b>112</b> can be removably connected to the proximal end of an elongated member <b>102</b> via a pivoting connector <b>302</b> having an axis of rotation substantially parallel to the longitudinal axis of a bristle assembly <b>104</b>. A pivoting connector <b>302</b> can have a range of motion of approximately 0-90 degrees. In such embodiments, a handle <b>112</b> can be rotated from the deployed position (substantially perpendicular to the longitudinal axis of the proximal portion of an elongated member <b>102</b>) to rest against an elongated member <b>102</b> to make the present device more compact for storage.

In some embodiments, as shown in <figref idref="DRAWINGS">FIG. 3</figref><i>a</i>, a handle <b>112</b> can have a partial-loop configuration in which a first handle section <b>304</b> extends substantially perpendicularly from the longitudinal axis of an elongated member <b>102</b> and curves into a second handle section <b>306</b> than can terminate such that the grip portion of a handle <b>112</b> can be substantially parallel to a bristle assembly <b>104</b>. However, in other embodiments, as shown in <figref idref="DRAWINGS">FIG. 3<i>b</i></figref>, a handle <b>112</b> can also have a “t-shaped” configuration or any other known and/or convenient configuration.

As shown in <figref idref="DRAWINGS">FIG. 1<i>a</i></figref>, a padded grip <b>114</b> can substantially cover the exterior surface of a handle <b>112</b>. However, in other embodiments a padded grip <b>114</b> can cover any known and/or convenient portion of the exterior surface of a handle <b>112</b>.

In some embodiments, as shown in <figref idref="DRAWINGS">FIG. 4</figref>, the proximal portion of an elongated member <b>102</b> can further comprise a proximal adjustment mechanism <b>402</b> positioned between a handle <b>112</b> and a forearm support member <b>116</b>. In some embodiments, a proximal adjustment mechanism <b>402</b> can be a spring-loaded locking-button device, but in other embodiments can be a locking pin or nut, threaded connection, friction fit or any other known and/or convenient device. In such embodiments, adjusting the length of the proximal portion of an elongated member <b>102</b> can provide the optimal distance between a handle <b>112</b> and a forearm support <b>116</b> for proper biomechanical support and user comfort.

As shown in <figref idref="DRAWINGS">FIG. 5</figref>, the present device can have a retrofitting kit embodiment that can convert a standard sweeping device into an ergonomic sweeping device. In such embodiments, an elongated member <b>502</b> can have an offset region <b>504</b> located substantially proximal to the distal end of an elongated member <b>502</b>. In such embodiments, an elongated member <b>502</b> can be divided into a shorter distal portion and a longer proximal portion substantially at the point of an offset region <b>504</b>.

In some embodiments, an offset region <b>504</b> can be comprised of two opposite angular bends of approximately 45-degrees relative to the central axis of an elongated member <b>502</b>, such that the central axis of a proximal portion of an elongated member <b>502</b> can be shifted posterior to the central axis of a distal portion of an elongated member <b>502</b>. However, in other embodiments, the bends can be any other known and/or convenient angular measurement.

In some embodiments, at least the distal portion can be substantially hollow, having an interior cross-sectional geometry to selectively engage with a standard broomstick. In some embodiments, an elongated member <b>502</b> can be substantially hollow or tubular with a substantially cross-sectional geometry, but in other embodiments can be solid or partially solid from an offset region <b>504</b> up through the proximal portion of an elongated member <b>502</b> and can have any other known and/or convenient cross-sectional geometry. An elongated member <b>502</b> can be made from polymer, metal, or any other known and/or convenient material. In some embodiments, the material comprising an elongated member <b>102</b> can be selected to minimize the weight of the device.

In use, a person can pass an arm through a forearm support member <b>116</b> and grip a handle <b>112</b> such that the back of the hand can be adjacent to an elongated member <b>102</b> and the dorsal side of the forearm can rest against a forearm support member <b>116</b>. While pulling the device forward in a sweeping motion over a floor, frictional forces between the floor and a bristle assembly <b>104</b> can create a moment about a handle <b>112</b>, creating a force on the dorsal side of a forearm at the point of contact with a forearm support member <b>116</b>. This can provide ergonomic support at the forearm, which can enable a person to operate the present device one-handed. Such one-handed operation frees a user's other hand to carry a receptacle or dustpan for removing any swept-up debris.

In embodiments, such as those shown in <figref idref="DRAWINGS">FIG. 1</figref> and <figref idref="DRAWINGS">FIGS. 2<i>a </i>and 2<i>b</i></figref>, a forearm support member <b>116</b> can contact a forearm both on the dorsal and frontal sides, thus providing support during forward and backward sweeping motions. In embodiments such as that shown in <figref idref="DRAWINGS">FIG. 2<i>c</i></figref>, forearm support can be limited to only the dorsal side of the forearm, making the present device primarily effective for forward sweeping motion.

As a forearm passes either through or adjacent to a forearm support <b>116</b> and a hand grips a handle <b>112</b>, the central longitudinal axis of a forearm can be aligned substantially parallel to the central longitudinal axis of the proximal portion of an elongated member <b>102</b>. An offset region <b>110</b> can allow the central longitudinal axis of a user's forearm to be substantially aligned with the central longitudinal axis of the distal portion of an elongated member <b>102</b>. This can improve the balance of the present device and reduce user fatigue.

In embodiments having a distal adjustment mechanism <b>108</b>, the length of an elongated member <b>102</b> can be adjusted to the height of a user. This can reduce back fatigue and strain by decreasing the user's need to stoop or bend over during a sweeping motion.

In embodiments having a proximal adjustment mechanism <b>402</b>, the length of the proximal section of an elongated member <b>102</b>, and, therefore, the distance between a handle <b>112</b> and a forearm support <b>116</b> can be adjusted to fit a user's forearm, which can improve comfort and reduce upper extremity fatigue and strain.

Although the invention has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the invention as described and hereinafter claimed is intended to embrace all such alternatives, modifications and variations that fall within the spirit and broad scope of the appended claims.